Non-Linear Precoding for OFDM Systems in Spatially-Correlated Frequency-Selective Fading MIMO Channels

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Executive Summary

This paper presents non-linear precoding design in closed-loop Multiple-Input Multiple-Output (MIMO) Orthogonal Frequency-Division Multiplexing (OFDM) over spatially-correlated, frequency-selective fading channels. The authors' analysis takes into consideration receiver channel mismatch due to imperfect channel estimates, and transmitter channel mismatch due to estimation errors, channel variations over feedback delay and feedback noise. They present a general spatially-correlated, frequency-selective fading MIMO channel model and derive the conditional means of the channel response.

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